Motifs can be any size, but usually all the motifs in any given work are the same size. The patterns and stitches used in a motif may vary greatly, but there is almost always some unifying element, such as texture, stitch pattern, or colour, which gives the finished piece more aesthetic appeal. Motifs may commemorate events or convey information or political slogans. For example the individual blocks of the AIDS Memorial Quilt, the possible Quilts of the Underground Railroad, and the "54-40 or Fight" quilt block.[1]